From patchwork Wed Apr 2 21:03:22 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 877724 Delivered-To: patch@linaro.org Received: by 2002:a5d:6dae:0:b0:38f:210b:807b with SMTP id u14csp2962649wrs; Wed, 2 Apr 2025 14:11:02 -0700 (PDT) X-Forwarded-Encrypted: i=2; AJvYcCXAmUDH4DspLmXw0hDJGqMjpSdu16r34KgwhtTvDkRQmmxEbGNTHXuybV/srr11orVRUyctoQ==@linaro.org X-Google-Smtp-Source: AGHT+IGZHAVapKr+Mwopqlx2xwwmiiSDVRQFi0XJhQBcdIaUQt2yPgX+TIUSYpK6KSlhafjFhda0 X-Received: by 2002:ad4:5ae7:0:b0:6ed:22ef:19b6 with SMTP id 6a1803df08f44-6eef5d9d0e0mr142777216d6.14.1743628261774; Wed, 02 Apr 2025 14:11:01 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1743628261; cv=none; d=google.com; s=arc-20240605; b=CrGoCY0aW/4KiaYS+fcu1NAOPnDAncfjriD+8WfDx4AEwiE6OGv7n5KjWmMmVGx0EF A8XSBEleFstZqKWFO4xauYotiW8T9RVkzGCBP4wEOZnIFIfH9N7rQEqceMuGdlTfL9OW o3w68KxnPN86sQT0vfwH/VbOU45f9IN71SGD/xTZZzYB/7DBPoRk3HkzrHMLZ+fq+bpy cAKm6oghbBr/Hyr8l5gvTh+AgDh2bw5C3+wbzhW+d1rDFlAk/fZMcHwcOJZ/0FVV9wQ6 Hg2tlw2O0gP9FQg2M1iDQnayyY3UZFhp/BNSyqqHxrcb+W+8xMFRuU/+SCRRKAFhgA/D lNqg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20240605; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:to:from :dkim-signature; bh=UTp1bFw6/PrKLuTqAF8Tn8zqCBWOwIvd1q5N2bCPhT0=; fh=1QrVKj9ups3F4B1TepDJ1Ep2wkdMM3224a5ti5bljHc=; b=bT1RanC8PO7sbCHDakMAkCsPl+PRGFVIsbeEKW6vc3+DZ2Xd+jz9P+Md2E0SVoxJKc PqD1lcvVF6LzGlQ+YpOLMosbTdGK0M8zs6srR04MGt7S8TNQAQd3UUfdcQGMvMLivxlb jE4yLENN1kIi26ScIlVRWNyb0uKcY39kZIOib9OfzEu+vy2v75GN+I/DjE0K8apIA8pz V0+miwG18k7KzZKNDL5amDmA2Amf3azcKJyZ3YoTFSsEhPBHwzZJFkrifn9eaV86wXxs Mzua4ryhjyWoxJ7mU7X3Rr6bS+xaw2JkPQAAmpj2bVebxVrqnL5cy7WDxye1yn559BrD SSug==; dara=google.com ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=UNK8vIix; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id af79cd13be357-7c5f778c4c2si1193171185a.372.2025.04.02.14.11.01 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Wed, 02 Apr 2025 14:11:01 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=UNK8vIix; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1u05IE-0002GD-Hj; Wed, 02 Apr 2025 17:06:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1u05IB-0001wt-Kv for qemu-devel@nongnu.org; Wed, 02 Apr 2025 17:06:35 -0400 Received: from mail-wm1-x331.google.com ([2a00:1450:4864:20::331]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1u05I8-0007My-N1 for qemu-devel@nongnu.org; Wed, 02 Apr 2025 17:06:35 -0400 Received: by mail-wm1-x331.google.com with SMTP id 5b1f17b1804b1-43cf3192f3bso1613485e9.1 for ; Wed, 02 Apr 2025 14:06:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1743627991; x=1744232791; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=UTp1bFw6/PrKLuTqAF8Tn8zqCBWOwIvd1q5N2bCPhT0=; b=UNK8vIixbGtGW9FzbwiaR5H2AYEw3Lj9xcCXCGWFbMLV81/NYF/yRoo4SYuYtAtIGs 6zkJvsfWEg+85yVxL5osghuGJ2s2KN7OI+0dsxeYFO6bDmMgEfCXEQNrN9dZHvJ0XOwQ B60pYCPmBwmIcVB04toYNUOuejwaK22bdPXOsm5iw+jMKnkMMxf3qySUtSsbqCtGYvMO lpgKQsO7VLVFRpbeQ6SalzKPSPh/yFaCwyjFXGOXxgaEmrUrTuXJxryX67OPPXYnSX8r aJEyilIzi14jIW1Oyvhc9o/NvyfeMmoDV2joU6ti2M1bD2pqxeDhXqRfUFrWrH/2+A0j 5sOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743627991; x=1744232791; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=UTp1bFw6/PrKLuTqAF8Tn8zqCBWOwIvd1q5N2bCPhT0=; b=tKMX/uUfWd2j7+SewLmjFNddrUBcMMt2H9qz7UOqQc5Lh+f3jJ5t1wk0TjlajeZ/K+ hSLS8Mc3msHCnpvS/J6aP6tlOkYi5JvMEgXUyYdoujOgucF959Qh7gE/mVtrT0r1CgEO xoafHV3p0x/hfh2dZ1+cJaH31B5ZekGwFbTpURw4FdDnYeWrv223MBi1ztbG0qadbZ6R DPexZVel1l45tIgACi9LLNDT1HdEHxK+Mn+EtPqP47700IfnnZcWZwEdCz+zHmhLAq7I KfCLSNkLyVwplf3Zzs0xVNM7LX8nlNCYyO76HZ//yDCDDewMI4Rg1IAZQi35NEGQbiIW E5xw== X-Forwarded-Encrypted: i=1; AJvYcCW+pGI1EEttnLPXjqBKtApQhlY+tSlcXwjScrw/WiQwZgYk5K90ejBKatnTbN8OtZd6ZLDv4ciIwoF+@nongnu.org X-Gm-Message-State: AOJu0YzWLx3l5UFX0KGiPmhC1bbXhAxjdUw9DYxeXO5qiW8Kt60uNkv7 TJpGX7qzx61gjPNh3I5SRSZvw8pNiwnG1zqyyc5UXmtQe0c6Yslax1ma5eEEPow0Dd4uv1bXuML W X-Gm-Gg: ASbGncuoSlNPyIqH5xkW9acgCyaZGpUvY8x4hmIAwUzGLZvHPZ2W3JDUqRY+lg2Yxgy Tg8+ioJ++8hqA/sGsroiUvCmTHylHyA0dTk0PVO1r38+jw62/ngyS+jhdKUIJai9kiQfHW6oQTJ 4+CEc0Ip8JzrGMi5QPP6+R4CFmOVuU92QY6GmVtUu9xauz/tTyNS/9MMqTM5Gud9W94bbzlo1tq HPE+xSx5qdlbac/nypIrQeJNNi8aqKw4zsH7gBpo3wXTLcHcPzlPjQ/iuocmNRNSmp6NHLXZym7 lsXoiII67OLY/HKOx2ns7T1s57di9wYgEwKPvfij/5+ucxjLls26Id7kG3V02YKzoWC9SJeHrth lScBxde9CK0DIyQShXLc= X-Received: by 2002:a05:600c:468c:b0:43d:83a:417d with SMTP id 5b1f17b1804b1-43db622a42emr189658135e9.12.1743627991125; Wed, 02 Apr 2025 14:06:31 -0700 (PDT) Received: from localhost.localdomain (88-187-86-199.subs.proxad.net. [88.187.86.199]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39c0b79e0d1sm17942533f8f.70.2025.04.02.14.06.29 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 02 Apr 2025 14:06:30 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: Richard Henderson , qemu-devel@nongnu.org Subject: [PATCH-for-10.1 37/43] tcg: Remove the TCG_GUEST_DEFAULT_MO definition globally Date: Wed, 2 Apr 2025 23:03:22 +0200 Message-ID: <20250402210328.52897-38-philmd@linaro.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250402210328.52897-1-philmd@linaro.org> References: <20250402210328.52897-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::331; envelope-from=philmd@linaro.org; helo=mail-wm1-x331.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org By directly using TCGCPUOps::guest_default_memory_order, we don't need the TCG_GUEST_DEFAULT_MO definition anymore. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Anton Johansson Reviewed-by: Richard Henderson Reviewed-by: Pierrick Bouvier --- docs/devel/multi-thread-tcg.rst | 4 ++-- target/alpha/cpu-param.h | 3 --- target/arm/cpu-param.h | 3 --- target/avr/cpu-param.h | 2 -- target/hexagon/cpu-param.h | 3 --- target/hppa/cpu-param.h | 8 -------- target/i386/cpu-param.h | 3 --- target/loongarch/cpu-param.h | 2 -- target/m68k/cpu-param.h | 3 --- target/microblaze/cpu-param.h | 3 --- target/mips/cpu-param.h | 2 -- target/openrisc/cpu-param.h | 2 -- target/ppc/cpu-param.h | 2 -- target/riscv/cpu-param.h | 2 -- target/rx/cpu-param.h | 3 --- target/s390x/cpu-param.h | 6 ------ target/sh4/cpu-param.h | 3 --- target/sparc/cpu-param.h | 23 ----------------------- target/tricore/cpu-param.h | 3 --- target/xtensa/cpu-param.h | 3 --- target/alpha/cpu.c | 3 ++- target/arm/cpu.c | 3 ++- target/arm/tcg/cpu-v7m.c | 3 ++- target/avr/cpu.c | 2 +- target/hexagon/cpu.c | 3 ++- target/hppa/cpu.c | 8 +++++++- target/i386/tcg/tcg-cpu.c | 5 ++++- target/loongarch/cpu.c | 2 +- target/m68k/cpu.c | 3 ++- target/microblaze/cpu.c | 3 ++- target/mips/cpu.c | 2 +- target/openrisc/cpu.c | 2 +- target/ppc/cpu_init.c | 2 +- target/riscv/tcg/tcg-cpu.c | 2 +- target/rx/cpu.c | 3 ++- target/s390x/cpu.c | 6 +++++- target/sh4/cpu.c | 3 ++- target/sparc/cpu.c | 23 ++++++++++++++++++++++- target/tricore/cpu.c | 3 ++- target/xtensa/cpu.c | 3 ++- 40 files changed, 66 insertions(+), 101 deletions(-) diff --git a/docs/devel/multi-thread-tcg.rst b/docs/devel/multi-thread-tcg.rst index b0f473961dd..14a2a9dc7b5 100644 --- a/docs/devel/multi-thread-tcg.rst +++ b/docs/devel/multi-thread-tcg.rst @@ -28,8 +28,8 @@ vCPU Scheduling We introduce a new running mode where each vCPU will run on its own user-space thread. This is enabled by default for all FE/BE combinations where the host memory model is able to accommodate the -guest (TCG_GUEST_DEFAULT_MO & ~TCG_TARGET_DEFAULT_MO is zero) and the -guest has had the required work done to support this safely +guest (TCGCPUOps::guest_default_memory_order & ~TCG_TARGET_DEFAULT_MO is zero) +and the guest has had the required work done to support this safely (TARGET_SUPPORTS_MTTCG). System emulation will fall back to the original round robin approach diff --git a/target/alpha/cpu-param.h b/target/alpha/cpu-param.h index dd44feb1793..a799f42db31 100644 --- a/target/alpha/cpu-param.h +++ b/target/alpha/cpu-param.h @@ -26,7 +26,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 0 -/* Alpha processors have a weak memory model */ -#define TCG_GUEST_DEFAULT_MO (0) - #endif diff --git a/target/arm/cpu-param.h b/target/arm/cpu-param.h index 2cee4be6938..5c5bc8a009e 100644 --- a/target/arm/cpu-param.h +++ b/target/arm/cpu-param.h @@ -44,7 +44,4 @@ */ #define TARGET_INSN_START_EXTRA_WORDS 2 -/* ARM processors have a weak memory model */ -#define TCG_GUEST_DEFAULT_MO (0) - #endif diff --git a/target/avr/cpu-param.h b/target/avr/cpu-param.h index 9d37848d97d..f74bfc25804 100644 --- a/target/avr/cpu-param.h +++ b/target/avr/cpu-param.h @@ -27,6 +27,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 0 -#define TCG_GUEST_DEFAULT_MO 0 - #endif diff --git a/target/hexagon/cpu-param.h b/target/hexagon/cpu-param.h index 7cc63a01d4b..635d509e743 100644 --- a/target/hexagon/cpu-param.h +++ b/target/hexagon/cpu-param.h @@ -25,7 +25,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 0 -/* MTTCG not yet supported: require strict ordering */ -#define TCG_GUEST_DEFAULT_MO TCG_MO_ALL - #endif diff --git a/target/hppa/cpu-param.h b/target/hppa/cpu-param.h index 68ed84e84af..9bf7ac76d0c 100644 --- a/target/hppa/cpu-param.h +++ b/target/hppa/cpu-param.h @@ -21,12 +21,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 2 -/* PA-RISC 1.x processors have a strong memory model. */ -/* - * ??? While we do not yet implement PA-RISC 2.0, those processors have - * a weak memory model, but with TLB bits that force ordering on a per-page - * basis. It's probably easier to fall back to a strong memory model. - */ -#define TCG_GUEST_DEFAULT_MO TCG_MO_ALL - #endif diff --git a/target/i386/cpu-param.h b/target/i386/cpu-param.h index 0c8efce8619..ebb844bcc83 100644 --- a/target/i386/cpu-param.h +++ b/target/i386/cpu-param.h @@ -24,7 +24,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 1 -/* The x86 has a strong memory model with some store-after-load re-ordering */ -#define TCG_GUEST_DEFAULT_MO (TCG_MO_ALL & ~TCG_MO_ST_LD) - #endif diff --git a/target/loongarch/cpu-param.h b/target/loongarch/cpu-param.h index dbe414bb35a..58cc45a377e 100644 --- a/target/loongarch/cpu-param.h +++ b/target/loongarch/cpu-param.h @@ -15,6 +15,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 0 -#define TCG_GUEST_DEFAULT_MO (0) - #endif diff --git a/target/m68k/cpu-param.h b/target/m68k/cpu-param.h index 10a8d74bfa9..256a2b5f8b2 100644 --- a/target/m68k/cpu-param.h +++ b/target/m68k/cpu-param.h @@ -19,7 +19,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 1 -/* MTTCG not yet supported: require strict ordering */ -#define TCG_GUEST_DEFAULT_MO TCG_MO_ALL - #endif diff --git a/target/microblaze/cpu-param.h b/target/microblaze/cpu-param.h index 5d55e0e3c4a..e0a37945136 100644 --- a/target/microblaze/cpu-param.h +++ b/target/microblaze/cpu-param.h @@ -29,7 +29,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 1 -/* MicroBlaze is always in-order. */ -#define TCG_GUEST_DEFAULT_MO TCG_MO_ALL - #endif diff --git a/target/mips/cpu-param.h b/target/mips/cpu-param.h index 99ca8d1684c..58f450827f7 100644 --- a/target/mips/cpu-param.h +++ b/target/mips/cpu-param.h @@ -22,6 +22,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 2 -#define TCG_GUEST_DEFAULT_MO (0) - #endif diff --git a/target/openrisc/cpu-param.h b/target/openrisc/cpu-param.h index 7ea0ecb55a6..b4f57bbe692 100644 --- a/target/openrisc/cpu-param.h +++ b/target/openrisc/cpu-param.h @@ -14,6 +14,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 1 -#define TCG_GUEST_DEFAULT_MO (0) - #endif diff --git a/target/ppc/cpu-param.h b/target/ppc/cpu-param.h index d0651d2ac89..e4ed9080ee9 100644 --- a/target/ppc/cpu-param.h +++ b/target/ppc/cpu-param.h @@ -39,6 +39,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 0 -#define TCG_GUEST_DEFAULT_MO 0 - #endif diff --git a/target/riscv/cpu-param.h b/target/riscv/cpu-param.h index ff4ba81965a..cfdc67c258c 100644 --- a/target/riscv/cpu-param.h +++ b/target/riscv/cpu-param.h @@ -34,6 +34,4 @@ * - M mode HLV/HLVX/HSV 0b111 */ -#define TCG_GUEST_DEFAULT_MO 0 - #endif diff --git a/target/rx/cpu-param.h b/target/rx/cpu-param.h index fe39a77ca38..84934f3bcaf 100644 --- a/target/rx/cpu-param.h +++ b/target/rx/cpu-param.h @@ -26,7 +26,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 0 -/* MTTCG not yet supported: require strict ordering */ -#define TCG_GUEST_DEFAULT_MO TCG_MO_ALL - #endif diff --git a/target/s390x/cpu-param.h b/target/s390x/cpu-param.h index a8a4377f4ff..abfae3bedfb 100644 --- a/target/s390x/cpu-param.h +++ b/target/s390x/cpu-param.h @@ -14,10 +14,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 2 -/* - * The z/Architecture has a strong memory model with some - * store-after-load re-ordering. - */ -#define TCG_GUEST_DEFAULT_MO (TCG_MO_ALL & ~TCG_MO_ST_LD) - #endif diff --git a/target/sh4/cpu-param.h b/target/sh4/cpu-param.h index acdf2397495..f328715ee86 100644 --- a/target/sh4/cpu-param.h +++ b/target/sh4/cpu-param.h @@ -18,7 +18,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 1 -/* MTTCG not yet supported: require strict ordering */ -#define TCG_GUEST_DEFAULT_MO TCG_MO_ALL - #endif diff --git a/target/sparc/cpu-param.h b/target/sparc/cpu-param.h index 62d47b804bb..45eea9d6bac 100644 --- a/target/sparc/cpu-param.h +++ b/target/sparc/cpu-param.h @@ -23,27 +23,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 1 -/* - * From Oracle SPARC Architecture 2015: - * - * Compatibility notes: The PSO memory model described in SPARC V8 and - * SPARC V9 compatibility architecture specifications was never implemented - * in a SPARC V9 implementation and is not included in the Oracle SPARC - * Architecture specification. - * - * The RMO memory model described in the SPARC V9 specification was - * implemented in some non-Sun SPARC V9 implementations, but is not - * directly supported in Oracle SPARC Architecture 2015 implementations. - * - * Therefore always use TSO in QEMU. - * - * D.5 Specification of Partial Store Order (PSO) - * ... [loads] are followed by an implied MEMBAR #LoadLoad | #LoadStore. - * - * D.6 Specification of Total Store Order (TSO) - * ... PSO with the additional requirement that all [stores] are followed - * by an implied MEMBAR #StoreStore. - */ -#define TCG_GUEST_DEFAULT_MO (TCG_MO_LD_LD | TCG_MO_LD_ST | TCG_MO_ST_ST) - #endif diff --git a/target/tricore/cpu-param.h b/target/tricore/cpu-param.h index 45fde756b6a..eb33a67c419 100644 --- a/target/tricore/cpu-param.h +++ b/target/tricore/cpu-param.h @@ -14,7 +14,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 0 -/* MTTCG not yet supported: require strict ordering */ -#define TCG_GUEST_DEFAULT_MO TCG_MO_ALL - #endif diff --git a/target/xtensa/cpu-param.h b/target/xtensa/cpu-param.h index e7cb747aaae..7a0c22c9005 100644 --- a/target/xtensa/cpu-param.h +++ b/target/xtensa/cpu-param.h @@ -18,7 +18,4 @@ #define TARGET_INSN_START_EXTRA_WORDS 0 -/* Xtensa processors have a weak memory model */ -#define TCG_GUEST_DEFAULT_MO (0) - #endif diff --git a/target/alpha/cpu.c b/target/alpha/cpu.c index 6f931117a25..eeaf3a81c1a 100644 --- a/target/alpha/cpu.c +++ b/target/alpha/cpu.c @@ -235,7 +235,8 @@ static const struct SysemuCPUOps alpha_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps alpha_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* Alpha processors have a weak memory model */ + .guest_default_memory_order = 0, .initialize = alpha_translate_init, .translate_code = alpha_translate_code, diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 3f20e258fd0..3e9760b5518 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -2671,7 +2671,8 @@ static const struct SysemuCPUOps arm_sysemu_ops = { #ifdef CONFIG_TCG static const TCGCPUOps arm_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* ARM processors have a weak memory model */ + .guest_default_memory_order = 0, .initialize = arm_translate_init, .translate_code = arm_translate_code, diff --git a/target/arm/tcg/cpu-v7m.c b/target/arm/tcg/cpu-v7m.c index 4553fe9de07..89d4e4b4a2f 100644 --- a/target/arm/tcg/cpu-v7m.c +++ b/target/arm/tcg/cpu-v7m.c @@ -232,7 +232,8 @@ static void cortex_m55_initfn(Object *obj) } static const TCGCPUOps arm_v7m_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* ARM processors have a weak memory model */ + .guest_default_memory_order = 0, .initialize = arm_translate_init, .translate_code = arm_translate_code, diff --git a/target/avr/cpu.c b/target/avr/cpu.c index 67918684faf..8f79cf4c08b 100644 --- a/target/avr/cpu.c +++ b/target/avr/cpu.c @@ -224,7 +224,7 @@ static const struct SysemuCPUOps avr_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps avr_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + .guest_default_memory_order = 0, .initialize = avr_cpu_tcg_init, .translate_code = avr_cpu_translate_code, .synchronize_from_tb = avr_cpu_synchronize_from_tb, diff --git a/target/hexagon/cpu.c b/target/hexagon/cpu.c index 576a2e4b8af..ed56a16921f 100644 --- a/target/hexagon/cpu.c +++ b/target/hexagon/cpu.c @@ -320,7 +320,8 @@ static void hexagon_cpu_init(Object *obj) #include "accel/tcg/cpu-ops.h" static const TCGCPUOps hexagon_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* MTTCG not yet supported: require strict ordering */ + .guest_default_memory_order = TCG_MO_ALL, .initialize = hexagon_translate_init, .translate_code = hexagon_translate_code, .synchronize_from_tb = hexagon_cpu_synchronize_from_tb, diff --git a/target/hppa/cpu.c b/target/hppa/cpu.c index ac4560febea..dfbd9330565 100644 --- a/target/hppa/cpu.c +++ b/target/hppa/cpu.c @@ -253,7 +253,13 @@ static const struct SysemuCPUOps hppa_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps hppa_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* PA-RISC 1.x processors have a strong memory model. */ + /* + * ??? While we do not yet implement PA-RISC 2.0, those processors have + * a weak memory model, but with TLB bits that force ordering on a per-page + * basis. It's probably easier to fall back to a strong memory model. + */ + .guest_default_memory_order = TCG_MO_ALL, .initialize = hppa_translate_init, .translate_code = hppa_translate_code, diff --git a/target/i386/tcg/tcg-cpu.c b/target/i386/tcg/tcg-cpu.c index 3e1b315340c..d941df09560 100644 --- a/target/i386/tcg/tcg-cpu.c +++ b/target/i386/tcg/tcg-cpu.c @@ -125,7 +125,10 @@ static bool x86_debug_check_breakpoint(CPUState *cs) #include "accel/tcg/cpu-ops.h" static const TCGCPUOps x86_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* + * The x86 has a strong memory model with some store-after-load re-ordering + */ + .guest_default_memory_order = TCG_MO_ALL & ~TCG_MO_ST_LD, .initialize = tcg_x86_init, .translate_code = x86_translate_code, .synchronize_from_tb = x86_cpu_synchronize_from_tb, diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index ee74509a664..f5b8ef29ab0 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -864,7 +864,7 @@ static void loongarch_cpu_dump_state(CPUState *cs, FILE *f, int flags) #include "accel/tcg/cpu-ops.h" static const TCGCPUOps loongarch_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + .guest_default_memory_order = 0, .initialize = loongarch_translate_init, .translate_code = loongarch_translate_code, diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c index bfde9b85948..b2d8c8f1dea 100644 --- a/target/m68k/cpu.c +++ b/target/m68k/cpu.c @@ -589,7 +589,8 @@ static const struct SysemuCPUOps m68k_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps m68k_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* MTTCG not yet supported: require strict ordering */ + .guest_default_memory_order = TCG_MO_ALL, .initialize = m68k_tcg_init, .translate_code = m68k_translate_code, diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c index e46863574c6..4efba0dddb2 100644 --- a/target/microblaze/cpu.c +++ b/target/microblaze/cpu.c @@ -427,7 +427,8 @@ static const struct SysemuCPUOps mb_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps mb_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* MicroBlaze is always in-order. */ + .guest_default_memory_order = TCG_MO_ALL, .initialize = mb_tcg_init, .translate_code = mb_translate_code, diff --git a/target/mips/cpu.c b/target/mips/cpu.c index 860ec398229..010773405a8 100644 --- a/target/mips/cpu.c +++ b/target/mips/cpu.c @@ -550,7 +550,7 @@ static const Property mips_cpu_properties[] = { #ifdef CONFIG_TCG #include "accel/tcg/cpu-ops.h" static const TCGCPUOps mips_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + .guest_default_memory_order = 0, .initialize = mips_tcg_init, .translate_code = mips_translate_code, diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c index e62c698a407..87fe779042c 100644 --- a/target/openrisc/cpu.c +++ b/target/openrisc/cpu.c @@ -243,7 +243,7 @@ static const struct SysemuCPUOps openrisc_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps openrisc_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + .guest_default_memory_order = 0, .initialize = openrisc_translate_init, .translate_code = openrisc_translate_code, diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index 1c451021ad8..722e3125a72 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -7483,7 +7483,7 @@ static const TCGCPUOps ppc_tcg_ops = { .restore_state_to_opc = ppc_restore_state_to_opc, .mmu_index = ppc_cpu_mmu_index, - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + .guest_default_memory_order = 0, #ifdef CONFIG_USER_ONLY .record_sigsegv = ppc_cpu_record_sigsegv, diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index ded2d68ad78..50e81b2e521 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -140,7 +140,7 @@ static void riscv_restore_state_to_opc(CPUState *cs, } static const TCGCPUOps riscv_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + .guest_default_memory_order = 0, .initialize = riscv_translate_init, .translate_code = riscv_translate_code, diff --git a/target/rx/cpu.c b/target/rx/cpu.c index d7eac551fd4..f073fe8fc98 100644 --- a/target/rx/cpu.c +++ b/target/rx/cpu.c @@ -204,7 +204,8 @@ static const struct SysemuCPUOps rx_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps rx_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* MTTCG not yet supported: require strict ordering */ + .guest_default_memory_order = TCG_MO_ALL, .initialize = rx_translate_init, .translate_code = rx_translate_code, diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c index b1417eb1d89..85e6336cba1 100644 --- a/target/s390x/cpu.c +++ b/target/s390x/cpu.c @@ -345,7 +345,11 @@ void cpu_get_tb_cpu_state(CPUS390XState *env, vaddr *pc, } static const TCGCPUOps s390_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* + * The z/Architecture has a strong memory model with some + * store-after-load re-ordering. + */ + .guest_default_memory_order = TCG_MO_ALL & ~TCG_MO_ST_LD, .initialize = s390x_translate_init, .translate_code = s390x_translate_code, diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c index 29f4be7ba9c..7a05301c6ff 100644 --- a/target/sh4/cpu.c +++ b/target/sh4/cpu.c @@ -262,7 +262,8 @@ static const struct SysemuCPUOps sh4_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps superh_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* MTTCG not yet supported: require strict ordering */ + .guest_default_memory_order = TCG_MO_ALL, .initialize = sh4_translate_init, .translate_code = sh4_translate_code, diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c index ef04efcb183..56d9417ae3f 100644 --- a/target/sparc/cpu.c +++ b/target/sparc/cpu.c @@ -1001,7 +1001,28 @@ static const struct SysemuCPUOps sparc_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps sparc_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* + * From Oracle SPARC Architecture 2015: + * + * Compatibility notes: The PSO memory model described in SPARC V8 and + * SPARC V9 compatibility architecture specifications was never + * implemented in a SPARC V9 implementation and is not included in the + * Oracle SPARC Architecture specification. + * + * The RMO memory model described in the SPARC V9 specification was + * implemented in some non-Sun SPARC V9 implementations, but is not + * directly supported in Oracle SPARC Architecture 2015 implementations. + * + * Therefore always use TSO in QEMU. + * + * D.5 Specification of Partial Store Order (PSO) + * ... [loads] are followed by an implied MEMBAR #LoadLoad | #LoadStore. + * + * D.6 Specification of Total Store Order (TSO) + * ... PSO with the additional requirement that all [stores] are followed + * by an implied MEMBAR #StoreStore. + */ + .guest_default_memory_order = TCG_MO_LD_LD | TCG_MO_LD_ST | TCG_MO_ST_ST, .initialize = sparc_tcg_init, .translate_code = sparc_translate_code, diff --git a/target/tricore/cpu.c b/target/tricore/cpu.c index 3bf399335ac..c68954b4096 100644 --- a/target/tricore/cpu.c +++ b/target/tricore/cpu.c @@ -172,7 +172,8 @@ static const struct SysemuCPUOps tricore_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps tricore_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* MTTCG not yet supported: require strict ordering */ + .guest_default_memory_order = TCG_MO_ALL, .initialize = tricore_tcg_init, .translate_code = tricore_translate_code, .synchronize_from_tb = tricore_cpu_synchronize_from_tb, diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c index 23471064957..2cbf4e30108 100644 --- a/target/xtensa/cpu.c +++ b/target/xtensa/cpu.c @@ -232,7 +232,8 @@ static const struct SysemuCPUOps xtensa_sysemu_ops = { #include "accel/tcg/cpu-ops.h" static const TCGCPUOps xtensa_tcg_ops = { - .guest_default_memory_order = TCG_GUEST_DEFAULT_MO, + /* Xtensa processors have a weak memory model */ + .guest_default_memory_order = 0, .initialize = xtensa_translate_init, .translate_code = xtensa_translate_code,